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Details:
Time: 19:39UT 2021-09-24 Exp.3 x 182sec
Telescope: 0.254m f/4.9 ST-10XME CCD 1.13"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.
Atom weight Neptunium Isotope 238.Half-life 2 days
AT2021ziy (= Gaia21efu) discovered 2021/09/10.489 at R.A. =
21h01m52s.713, Decl. = +68°09'51".92 Mag 17.2:9/10, Type unknown (References:
TNS, Gaia observations)
NGC 7023, The Iris Nebula is a bright reflection nebula in the constellation Cepheus.
Reference David Bishop http://www.rochesterastronomy.org/snimages/
Discovery page (References: TNS):
https://www.wis-tns.org/object/2021ziy
Reference image from Aladin or Sloan Digital Sky Survey
Software used:TheSky6,CCDSoft 5, MSB Astroart 2.0,7.0, Paint
Photographer's website:
https://www.flickr.com/photos/odd_trondal/
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